Mutum weather in September

In September, Mutum sees average daytime highs of 28°C and overnight lows near 17°C, with 29 mm of rain across 5.1 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 25% of the time in September, and the air most often feels humid.

Daylight stretches from about 11 h 36 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Mutum's 6th-clearest and 2nd-windiest month. For the whole year in context, see Mutum's year-round climate.

Daytime high
28°
8th warmest
Overnight low
17°
5th coldest
Rainfall
29 mm
5.1 wet days
Daylight
11 h 54 min
6:43 AM – 6:37 PM
Cloud cover
63%
6th clearest
Wind
7 km/h
2nd windiest
Solar energy
4.72 kWh/m²
Travel score
6.5
out of 10

Mutum is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical September day in Mutum reaches about 28°C in the afternoon and slips back to 17°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 32°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12817
22817
32817
42817
52817
62817
72817
82817
92817
102817
112817
122817
132817
142817
152817
162818
172818
182818
192818
202818
212818
222818
232818
242918
252918
262918
272918
282918
292918
302918

How September really feels in Mutum

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Mutum weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 21°14712.913.14.3
Feb31° / 21°809.312.74.4
Mar31° / 21°10812.612.14.4
Apr29° / 19°518.511.65.5
May27° / 17°244.111.17.2
Jun26° / 16°102.110.87.8
Jul26° / 15°82.110.97.9
Aug27° / 16°102.811.37.6
Sep28° / 17°295.111.96.5
Oct29° / 19°789.212.55.3
Nov29° / 20°16615.412.94.6
Dec30° / 21°2161713.24.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 59%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15347
25347
35149
45149
55149
64951
74951
84852
94753
104654
114555
124456
134357
144258
154258
164060
174060
183862
193862
203763
213664
223565
233565
243367
253367
263367
273268
283268
293268
303169

Chance of precipitation in September

Any precipitation

Mutum gets around 29 mm of rain over 5.1 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 17% and peaks near 27% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
112
212
312
412
512
611
711
811
911
1012
1112
1212
1313
1413
1514
1615
1716
1817
1918
2020
2121
2222
2323
2423
2524
2625
2725
2826
2926
3027

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the humid band about 49% of days. Sticky, muggy-or-worse air turns up on roughly 11% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11243424
21143424
31143424
41142434
51142434
61141435
71041445
81040455
91039466
10938476
11937487
12835497
13834508
14734509
15733519
166325210
176315211
186305212
196295213
206285313
216275314
226265315
236265216
246255217
256245218
266235120
276235021
285225122
295225023
305215024

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 36 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over September. Sunrise moves from 6:57 AM to 6:30 AM, and sunset from 6:34 PM to 6:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:576:34
211.66:566:34
311.66:566:34
411.76:556:34
511.76:546:34
611.76:536:35
711.76:526:35
811.76:516:35
911.86:506:35
1011.86:496:36
1111.86:486:36
1211.86:476:36
1311.86:466:36
1411.96:456:36
1511.96:446:37
1611.96:436:37
1711.96:426:37
1811.96:426:37
1911.96:416:37
2012.06:406:38
2112.06:396:38
2212.06:386:38
2312.06:376:38
2412.06:366:38
2512.16:356:39
2612.16:346:39
2712.16:336:39
2812.16:326:39
2912.16:316:40
3012.26:306:40

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.72 kWh/m².

For context, solar energy here swings from a low near 3.52 kWh/m² to a high of 6 kWh/m² in February across the year — September's 4.72 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
Planning a trip in September

Hazard calendar for Mutum

In seasonPeak

None of Mutum's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Mutum's monsoon runs March–March, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Mutum?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.5
Sightseeing
5th-best month of the year
7.5
Beach & pool
5th-best month of the year

September is a reasonable time to visit Mutum for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Mutum in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Mutum sees daytime highs around 28°C and nights near 17°C. Pack light clothes. Worth having: sun protection. About 5 days see rain.

light clothessun protection

UV index in Mutum in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mutum peaks around February 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 7 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 13UV 15Jun 22UV 7
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar14Extreme
Apr10Extreme
May8Very high
Jun7High
Jul7High
Aug9Very high
Sep10Extreme
Oct12Extreme
Nov14Extreme
Dec14Extreme
Location & terrain

Where is Mutum?

Mutum sits at 19.8°S, 41.4°W, 223 m above sea level, in Brazil. The nearest listed city is Ipanema, 29 km away.

Topography around Mutum

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mutum.

Within 3 km, the terrain around Mutum has significant variations in elevation — a maximum elevation change of 323 m around an average of 265 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,154 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,805 m.

The land around Mutum is covered by grassland (61%) and trees (34%) within 3 km, grassland (60%) and trees (39%) within 16 km, and trees (53%) and grassland (46%) within 80 km.

3 km
323 m
16 km
1,154 m
80 km
2,805 m
treesgrasslandartificial surfaces
September weather nearby: Ipanema 29 km · Lajinha 44 km · Afonso Cláudio 45 km · Ibatiba 49 km · Aimorés 52 km · Baixo Guandu 54 km · Resplendor 56 km · Iúna 62 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Mutum (-19.8°, -41.4383°, elevation 223 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).